"The upper body is made to wear a Straitjacket with sleeves crossed over the back and chest and hung from the ceiling. A gas mask with a hose attached to the face is worn, a cervical collar is also attached to the neck so that the subject cannot look down, and the lower body is secured with hemp rope so that it does not open. In that state, I push it hard with bamboo shaku ♡ I know that even if the pain is nothing at first, it accumulates and gradually becomes more and more overwhelming. Which is better: the pain of a bamboo shoot or the pleasure of an electric massager? Let's check it out slowly♡"